---
title: "Sync signups to Omnisend"
description: "Add every back in stock signup to your Omnisend contacts automatically."
url: https://help.stoqapp.com/back-in-stock/sync-visitors-to-omnisend/
product: "Back in Stock"
section: "Integrations"
last_updated: 2026-09-28
---

# Sync signups to Omnisend

> Add every back in stock signup to your Omnisend contacts automatically.

STOQ can add each customer who signs up for a back in stock alert to your Omnisend contacts, as soon as they register. Use this if you run campaigns from Omnisend and want new signups added automatically.

## Before you begin

| Requirement | Detail |
|---|---|
| A paid plan | The sync toggle is disabled on the free plan. |
| An Omnisend API key | Generate one from your Omnisend account and have it ready to paste in. |

## Get your Omnisend API key

Before you connect STOQ to Omnisend, generate a private API key in your Omnisend account. You'll paste it into STOQ in the next section.

1. **Log in to Omnisend**

   Log in to your Omnisend account.

2. **Open your account menu**

   Click the profile icon in the bottom-left corner.

3. **Open Integrations & API**

   Go to **Store Settings > Integrations & API**.

4. **Create an API key**

   Click **API keys**, then click **Create API Key**.

5. **Name the key**

   Give the key a name (for example, "Restock-private-key") so you can identify it later.

6. **Select the Contacts permission**

   Make sure the **Contacts** permission is selected. STOQ needs this permission to create and update contacts.

7. **Create and copy the key**

   Click **Create** and copy the generated API key. Keep it somewhere safe; you'll need it in the next section.

   [Image: The Omnisend Store settings API page with the Create API key button](https://help.stoqapp.com/images/general/apinew.png)

## Set it up

On a phone, this menu is collapsed. In the **Shopify mobile app**, tap the **STOQ** logo at the top of the screen to open it, then choose the section named below. There is no hamburger icon. See [Finding the STOQ menu](https://help.stoqapp.com/general/getting-started-with-stoq/#finding-the-stoq-menu).

1. **Open the Omnisend integration**

   1. In the left menu bar of the STOQ app, click **Back in stock alerts**.
   2. Click the **Settings** tab, then open the **Integrations** sub-tab.
   3. Click **See integrations** to open the full **Integrations** page.
   4. In the **Marketing** section, find the **Omnisend** card and click **Set up**.

   [Image: The Integrations sub-tab under Back in stock alerts Settings](https://help.stoqapp.com/images/general/inter.png)

   [Image: The Omnisend card with its Set up button on the STOQ Integrations page](https://help.stoqapp.com/images/general/omni.png)

2. **Turn on the sync toggle**

   Enable **Sync visitors with Omnisend**.

3. **Add your Omnisend API key**

   Paste your key into the **Omnisend API key** field. A green checkmark confirms it's saved, with a **Change** link to update it later. If you don't have a key yet, see [Get your Omnisend API key](#get-your-omnisend-api-key) above.

   [Image: The Omnisend API key field](https://help.stoqapp.com/images/general/API.png)

4. **Set a profile tag (optional)**

   Enter a tag in the **Profile tags** field, shared with Shopify, Klaviyo, and Mailchimp.

   [Image: The Profile tags field](https://help.stoqapp.com/images/general/tagss.png)

Once connected, the card shows a **Marketing consent** summary. If you collect [marketing consent](https://help.stoqapp.com/back-in-stock/notify-me-mailing-list-optin/) on the signup form, Omnisend treats the profile as subscribed only when the customer opted in.

[Image: The Omnisend Marketing consent section with the Enable consent collection button](https://help.stoqapp.com/images/general/mark.png)

## Check your setup

1. Sign up for a restock alert yourself with a test email. See [Test back in stock alerts](https://help.stoqapp.com/back-in-stock/test-back-in-stock-alerts/).
2. Open your Omnisend contacts and confirm the test contact appears.

## Troubleshooting

### A signup didn't sync

Confirm the toggle is on and saved, and that the API key still shows the green checkmark rather than needing to be re-entered.

### The toggle is greyed out

It's a paid-plan feature. Upgrade to unlock it.

## FAQ

### Does this sync my existing waitlist too?

No. Only new signups sync, from the moment you turn the toggle on. Contact STOQ support to backfill existing customers.

### Do I need an Omnisend account already?

Yes. You need an active account and an API key before you can connect it.

### Does a customer need to opt in to marketing first?

No. Every signup syncs. Consent only affects whether Omnisend treats the profile as subscribed to campaigns.

## Related guides

- [Sync signups to Mailchimp](https://help.stoqapp.com/back-in-stock/sync-visitors-to-mailchimp/): The same, for Mailchimp.
- [Sync signups to your marketing tool](https://help.stoqapp.com/back-in-stock/sync-signups-to-marketing-tools/): Overview of every sync destination.
- [Let customers join your mailing list](https://help.stoqapp.com/back-in-stock/notify-me-mailing-list-optin/): Add a marketing consent checkbox to the signup form.